“This opens a new potential for other drillers to follow Shell’s act,” said Tom Gellrich, founder of TopLine Analytics, a manufacturing consultant specializing in shale gas plays.

The energy giant drilled the wells in one of the top-producing Marcellus shale counties, north of Williamsport. But Shell’s Gee and Neal wells are tapping a formation several thousand feet below the better-known Marcellus and were drilled about 100 miles northeast of the closest producing Utica well.